Adjustable pipe-wrench.



J. SHAFFER.

ADJUSTABLE PIPE WRENCH APPLICATION 'mzo MAY '2 1911.

1,276,2-M. Patented Aug. 20, 1918. j

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5 I Q12} 9-; A B l1 W7 Jaw/V ATTOR N EY Jos'rirn: sHArFER, or McKrrTRIcK, CALIFORNIA.

' ADJUSTABLE PIPE-WBENGHJ To all whom it may concern:

Be it known that I, JosErH SHAFFER, a citizen of the United States, residing at McKittrick, in the county of Kern and State of California, have invented certain new and useful Improvements in Adjustable Pipe- Wrenches, of which the following is a specification.

This invention relates to new and useful improvements in wrenches and the principal object of the invention is to provide a wrench of this character which will fit different sizes of pipes and the like Without necessitating any adjustment of the wrench.

Another object of the invention is to provide a pivoted member carrying one jaw and having swinging movement in relation to the other jaw and to form a curved engaging face on said swinging member so that the distance between the jaws is varied by slight movement of the movable jaw.

Another object of the invention is to provide a device of this character, which is simple and durable in construction, reliable and eflicient in operation and one which can be manufactured and placed upon the market at a minimum cost.

The invention also consists in certain other features of construction and in the combination and arrangement of the several parts, to be hereinafter fully described, illustrated in the accompanying drawings and specifically pointed out in the appended claim.

In describing my invention in detail, reference will be had to the accompanying drawings, wherein like characters denote like or corresponding parts throughout the several views, and in which:

Figure 1 is a front view of the invention with parts in section, and

Fig. 2 is a side view.

In these figures 1 indicates the shank having a stationary jaw 2 thereon, and this jaw is provided with a groove 3 extending from its head to adjacent the other end of the jaw, said groove curving from the head of the jaw toward the other end, as shown in Fig. 1. The shank 1 is provided with aslot 4 extending from the groove 3 to a point adjacent the other end of the shank, and a groove 5 is provided in the shank, said Specification of Letters Patent. Patntetl Aug. 20, 1918. 7 Application filed. May 2, 1917. seria no. 166,006.

groove beginning at the point where the slot stops and passing through to the end of the shank. 6 represents-the shank of the other jaw, and this shank is pivoted at 7 in the slot of theother shank and has its end adapted to lie within the groove 5, as shown in Fig. 1. This shank is provided with a jaw 8 having its engaging face of substantially it will be apparent that a pipe may be readilyinserted through the groove 3 thence between the jaws without necessitating the manual adjustment of the various parts of the wrench.

When the shank 6 is moved away from the main shank, the space between the jaws quickly increases and due to .the formation of the movable jaw, the wrench will accommodate pipes of a great number of different sizes.

It is thought from the foregoing that the advantages and novel features of my invention will be readily apparent.

I desire it to be understood that I may make slight changes in the construction and in the combination and arrangement of the several parts, provided that such changes fall within the scope of the appended claiml I claim as my invention A wrench comprising a shank having a longitudinal slot therein, a jaw secured to the end of the shank at right angles thereto and having a groove in the under face thereof to extend longitudinally of said jaw for communicating with said slot, said groove extending from the rear of said jaw to a point adjacent its forward end and being curved downwardly to said point, teeth on the edges of said groove, a second shank pivoted to the first shank and passing through the slot in the first shank, a second jaw of semicircular form on the inner longitudinal edge of the upper end of the second shank, the uppergroove and between the jaws without adjustmost end of said jaw being flush with the ing the parts of the wrench in any way; 10 under side of the first named jaw and oppo- In testimony whereof I aifix my signature site the groove therein, and the lower end of in presence of two witnesses.

the semicircular jaw being arranged in, the JOSEPH SHAFFER. slot in the first named shank when the jaws Witnesses: are in a closed position, to form anopening ,RAY M. BANNON, whereby a pipe may be passed through the JACK WILKINSON.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

' Washington, D. G. 

